IRC chat logs for #ltsp on irc.freenode.net (webchat)


Channel log from 13 September 2020   (all times are UTC)

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14:06
<alkisg>
markit, what's the output of `cupsctl` on the server? It should say _share_printers=1
16:11eu^18317118519 has joined IRC (eu^18317118519!b7abb913@183.171.185.19)
16:11
<eu^18317118519>
Hai
16:12
etc/ltsp/ltsp.conf
16:12eu^18317118519 is now known as Ji
16:13
<Ji>
Hai
16:13
Anybody available
16:13
Hai
16:14
I have some issues in ltsp setup Ubuntu 20.04 LTS
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16:36markit1 has joined IRC (markit1!526a747d@host-82-106-116-125.business.telecomitalia.it)
16:36
<alkisg>
Hey markit1, I was about to go out, do you need something before I go?
16:36
<markit1>
hi alkisg, you were right, I forgot to set the server global printer sharing, my bad!
16:36
I've a new problem for you
16:37
<alkisg>
Great, anything still not working? Shoot
16:37
<markit1>
I've the "broadcast the screen" that works only for some seconds, then the "old" error on clients "unable to connect to socket: connection refused 111"
16:38
<alkisg>
You're on KDE withOUT wayland, right?
16:38
And it works for some seconds, and THEN it stops working?
16:38
<markit1>
24 clients, I'm just testing, no one logged in, shared the screen, palyed for 1 - 2 minutes moving windows on the server and seeing it with a little delay on all clients, then the login screen returned and if I try to share again, that error
16:39
yes, kde with xwindow
16:39
<alkisg>
Can I see?
16:39
!vnc-edide
16:39
<ltspbot>
vnc-edide: To share your screen with me, open Epoptes → Help menu → Remote support → Host: srv1-dide.ioa.sch.gr, and click the Connect button
16:39
<markit1>
(btw, would love to make apache or other solution work for http boot,)
16:41
<alkisg>
markit1: can i install virtualbox, to test http?
16:41
to have a vm client
16:41
<markit1>
ok
16:41
but the adsl is slow, 7mbs
16:43
btw, I use qemu/kvm :) usually
16:44
<alkisg>
Hehe OK, I prefer virtualbox because it doesn't need a bridge
16:45
<markit1>
I've a bond on client side
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16:48
<alkisg>
markit1: haha it's too fast
16:48
Can you stop it while ipxe shows up?
16:48
right ctrl + p
16:48
for pause
16:52
sed 's,ltsp/ltsp.ipxe,192.168.67.1:/&,' ltsp-dnsmasq.conf
16:55
sed 's,ltsp/ltsp.ipxe,http://192.168.67.1/&,' -i ltsp-dnsmasq.conf
16:55
markit1: try rebooting the clients
16:56
To see if they work with http
16:56
Hmm I hope python can serve to multiple clients :D
16:56
Otherwise you need a better web server than python3 -m http.server :D
16:57
<markit1>
Working! But my problem was with python3 server on port 8000 ok, but with apache, same port, error
16:57
<alkisg>
That's just a problem of apache configuration then, not ltsp
16:57
Do you want port 8000 or 80?
16:57
<markit1>
I would prefer 8000 so if I need to provide http pages from the server, I'm still ok with apache
16:58
I created a "site" for port 8000, enabled in apache etc.
16:58
<alkisg>
Then you would need to run two apache instances, one for 8000 and one for 80, but ok
16:58
<markit1>
ops
16:59
I thought was like port 80 and 443... just an apache instance
16:59
<alkisg>
possibly
16:59
I don't use apache much
16:59
<markit1>
by the way the problem more urgent is that the screen sharing crashes
16:59
<alkisg>
What I mean is that since you'll be using apache for both ltsp and not ltsp, why not just use 80
16:59
<markit1>
oh, if you have a different solution like python3 httpserver that works fine, I'm ok with that
16:59
oh, right, I'm dumb
16:59
<alkisg>
You can run python3 -m http.server and use port 8000, no problem there
17:00
<markit1>
I thought you have to choose an exclusive port for the boot
17:00
<alkisg>
OK let's see about the screen broadcasting
17:00
No it's just a web page, nothing exclusive about it
17:00
<markit1>
I mean, http port 80 on the server would have provided the http page and not the boot
17:00
<alkisg>
And it's in a subdir, so it doesn't conflict with anything
17:02
<markit1>
[xcb] Unknown sequence number while processing queue[xcb] Most likely this is a multi-threaded client and XInitThreads has not been called
17:02
[xcb] Aborting, sorry about that.x11vnc: ../../src/xcb_io.c:260: poll_for_event: Assertion `!xcb_xlib_threads_sequence_lost' failed.
17:03
<alkisg>
OK let's google these...
17:10
markit1: it seems that x11vnc doesn't like kde
17:10
<markit1>
great :(
17:12
<alkisg>
Greek schools ppa. Don't leave home without it :P
17:12
socat is broken in 20.04
17:12
In the ppa I have a fixed version
17:12
<vagrantc>
ouch
17:12
<alkisg>
I don't think it matters, but it fixes the epoptes terminal
17:12
<markit1>
damn, my installation scripts should always add that ppa! :((((
17:13* alkisg waves to vagrantc
17:17
<alkisg>
markit, so that I don't lose my evening walk, try these things:
17:17
['x11vnc', '-noshm', '-nopw', '-quiet', '-viewonly', '-shared',
17:17
'-forever', '-nolookup', '-24to32', '-threads', '-rfbport',
17:17
str(self.vncserver_port), '-rfbauth', pwdfile])
17:17
You run x11vnc with these parameters in one pc
17:18
then you connect to that x11vnc server from another pc, using your tightvnc viewer, and see if you can make it crash without epoptes,
17:18
then, you play with the parameters to see if you can find a parameter that does not crash it,
17:18
or you install `xvnc4viewer` and uninstall `xtigervnc-viewer`, and see if it works OK with xvnc4viewer
17:19
<markit1>
ok, could you put the epoptes file with the original config?
17:19
<alkisg>
It's with the original config
17:19
I already undone the change
17:20
<markit1>
perfect, thanks a lot, I've to leave too, I will try at home in my vm lab http boot and this vnc stuff, thanks!
17:20
<alkisg>
OK! See you another time! :)
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19:06
<alkisg>
markit, ah, so if you had added the ppa before installing epoptes, then you'd have had installed xvnc4viewer instead of tigervnc viewer, which might not have this xorg issue
19:07
The realvnc.com client, and the xvnc4viewer (which is realvnc from 2005), both work fine; unfortunately the other open source vnc implementations all have issues...
19:08
Unfortunately xvnc4viewer was removed from debian, while it still works better than all the alternatives...
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